This error in the Exchange System Manager is a generic MAPI error code, but not necessarily a MAPI error.
Unfortunately there is no clear cut cause to this error, but performing the following steps should fix the problem.
- Check the version number of w3svc.dll on your Exchange 2000 Server. It should be 5.0.2195.1600. A higher version of this dll was used in a post Windows 2000 SP1 hot fix, but broke PF in Exchange Manager. The easiest solution is to copy the w3svc.dll file from the Windows 2000 SP1 CD.
- You may also try the following:
Open IIS Admin Manager, Expand “Default Website” or whichever website Exadmin is under. Right-click and select properties of Exadmin. Go to the Directory Security Tab. Click Edit under “Anonymous Access and Authentication Control.” Check “Integrated Windows Authentication.”
- Also check to see if the Exadmin directory is set to use only SSL. This has been known to cause the error as well.